/// <summary>
/// 设置发文单位
/// </summary>
/// <param name="issuedUnit">发文单位</param>
public void SetIssuedUnit(IssuedUnit issuedUnit)
{
if (issuedUnit == null || issuedUnit.IsTransient())
{
throw new ArgumentException("发文单位Id参数为空！");
}
IssuedUnit = issuedUnit;
IssuedUnitId = issuedUnit.Id;
}
